发明名称 |
PROCESS AND APPARATUS FOR MAKING LOW MOLECULAR WEIGHT CELLULOSE ETHERS |
摘要 |
There is a process for making a cellulose ether. The process comprises the following: a) alkalyzing a cellulose pulp; b) etherifying the alkalyzed cellulose pulp to form a cellulose ether; c) washing the cellulose ether; d) drying the cellulose ether; e) milling the cellulose ether to a particulate form; f) heating the particulate cellulose ether; g) tumbling the particulate cellulose ether while simultaneously contacting it with an acid to partially depolymerize it to a lower molecular weight; h) partially or substantially neutralizing the acid. There is also an apparatus for making the cellulose ether.
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申请公布号 |
US2001007028(A1) |
申请公布日期 |
2001.07.05 |
申请号 |
US19980203324 |
申请日期 |
1998.12.01 |
申请人 |
SCHULZ GARY J. |
发明人 |
SCHULZ GARY J. |
分类号 |
C08B11/02;C08B11/193;C08B11/20;C08B17/06;(IPC1-7):C08B11/00;D21C3/26;D21C7/00 |
主分类号 |
C08B11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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